The "BIG MATH for Little Kids" set of workbooks adds enrichment to a young student's math learning. There are two versions of each workbook - the Solution Manual and the Workbook. The Workbook is the same as the Solution Manual, except most of the answers have been removed. This workbook (Adding Big Numbers ...) is suitable for children in grades 3 through 7. Before using this workbook, students should already be able to add simple numbers. The following math skills are introduced: Techniques to help with adding many large numbers.Solving simple equations for X. (Algebra)Coding messages and words with a simple non-standard code.Coding messages and words with the Morse and ASCII codes.